Power-mechanism trip device



I. T. VERDIN.

POWER MECl-IANISM TRIP DEVICE. APPLICATION HLEDI'MA'Y 1'2. 1920.

Patented Sept. 19, 1922.

2 SHEETS-SHEET I.

T. mum. POWER MECHANISM TRIP DEVICE.

APPLICATION FILED MAY 12, I92 0- 17mmSe t.19, 1922.

2 SHEETS-SHEET 2.

" To' 'all whom z't may concern:

' These and 26' Patented Sept. 19, 1 922.

'm'rn' :1.

INNES '1'. VERDIN, CINCINNATI, OHIO, ASSIGNOR TO THE VERDIN KAPIEES & VERDIN COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

POWER-MECHANISM TRIP DEVTCE. v

Application fiiea'iitay 'i'z, 1920. Seria1 No.380,753.

Be it known that I, INNEsT. VERDIN, a

citizen of the United States of America, and

a, residentof Cincinnati, in the county of Hamilton-and State of Ohio, have invented a new and useful Improvement in Power Mechanism Trip Devices, of which the following is a' specification.

A11 object of my invention is to provide atrip device for such mechanisms as punch presses; that will require that the operator use both'hands to tri'pthe mechanism, avoiding the possibility of the operator having one hand exposed to the mechanism when it is tripped; g I

' Anotherobject of my invention is topro- 'vide a device wherein the hand mechanisms employed, for the purposestated; are not attached to one another.

Another object is to providea trip device and i in which the possibilityof accidental tripping is re duced to a minimum.

other objects are attained by means described herein and disclosed in the accompanying drawing inwhich:

i Fig. l is, a side elevation, parts being brokenaway, of a punch press embodying my; invention.

Fig." 2 is an enlarged sectional view on lines- 2 of Fig.-= 1.

Fig. 3 is an' enlarged side elevation of a tripping mechanism,- forming a detail of my" invention. 3 5

Fig. 4 is-a sectional view on line 4-4. of Fig.3.f H

Fig. 5 is an, enlarged sectional view on line5-'5 ofFig; 1. i

Fig. 6 is a perspectiveviewof aU fastener, showing in dotted lines the manner of attachment of the fixed handles, the fastener and handle forming details of my invention. Fim? is an" enlarged sectional; view on line 7- -7 of Fig-i 1,' showing the means and method of attachment of the'loosehandle to the shaft, all which form details of my in VOIItlOIl." I

My inventionis of a tripping-mechanism and comprises right and left handles that ,m'aybe moved independentlv'o'f one another, but which are so arranged'fthat they cooperate in tripping the press when they ja're' jointly operated; The trip mechanism comprises'a lateral motion of the shaf B.

trip roller mounted on a trip in suclrrelation to the trip arm and trip roller that when both trip handles are moved, the'blocks will operate upon the trip arm and trip roller thereby moving the trip bar attached to the, clutch on the press. The I trip blocks areso arranged thatunles's both of the blocks are moved,the trip bar will f not be afiected. v p

The punch press A comprises the customary frame having the uprights a and a and bolster a The shaft'B is mounted horizontally upon the uprights a and afandcxtends through them. The right handle'R is mounted upon and secured, to the shaft B. The left handle L is loosely mounted onthe shaft B. l The collars I; mounted on the shaft B'prevent any The lever B is mounted upon andsecured to the shaft'B adj acentto the left handle L,

being spaced therefrom by means of the collar I) mounted on the shaft' B; The collar mounted'up'on and 'secured' to the 'sh'a'ft'B holds" the left lever upon the shaft B. The springs 6 b and b are attached to the'uprights of the frame and to the handles L and R and to the lever B respectively. The upperends' ofthe trip rods Z and'r are attached to the shanks d and d formed on the blocks D and D. The t'rip'rods' are'at tached at their lower ends to the handle'L and the leverR' respectively by means of the collar'l'. (See Fig. 5.) i

A shank Z is'formed on the collar Z. I A pint? pivotally'mounted upon shank Z is secured" in position by the cotter pin Z. A shoulder -Z fo'rined on the pin Z? limits the distance to which'jthepin It extends through the shank Z L' 'The'trip 'rodsareadapted to the adjustment I has been made.

he adjustedina slot Z inthe'pin Z. The I The handle B and the lever B are mounted upon the shaftBjin the manner and by the means disclosed in Fig. 6. I The .Ufastener R has its sides 1 and r spa'cedto permitthe "bar forming the handle it to be adjusted longitudinally between them. The

sides" of"thefastener areislotted, the slots.

having a hat side, whereby the fastener when mounted upon the shaft B, will be precluded from rotating about the shaft B because of the mutilated or flat surface 5 on the shaft B. The handle engages the flat surface 6 and the inside surface of the base of the U fastener. The screw r is adapted to pass through the base of the fastener and to clamp the handle R upon the shaft 13.

The handle L is mounted on the shaft B in the manner and by the means disclosed in Fig. 7. The block K has a slot I; in which the bar forming the handle L can be longitudinally adjusted. The screw extends through the wall of the block, engaging the handle L and secures the handle in the block. A slot 70 extending through the block transversely to the slot 70 is adapted to permit the block to be loosely mountedupon the shaft 13.

The blocks D and D are mounted in a housing E attached to the frame of t e I punch A. The block D has a shank 65" formed on its lower end and has a slot formed in the shank. A pin 6 extends from the housing E into the slot (Z The tri rods Z and 1' have their upper ends Z an 1 turned in such way that they will extend through apertures (Z formed in the shanks (Z and cl. Cotter pins Z and 9 prevent disengagement of the trip rods and the blocks. The inclined face (Z formed on the block D, extends upwardly toward the block D, and terminates immediately adjacent to a similar surface formed on the block D.

The trip bar F is mounted between the blocks D and D andthe back 6 of the housing E, and is adapted to be vertically reciprocated. The trip arm f is pivotally mounted upon the trip bar F by means of the screw 7, and is spaced from the trip bar by the collar f through which the screw 7 extends before engaging the trip bar. The trip arm extends upward from the collar 7, and has a trip roller f mounted at its upper end on pivot F. The trip roller 7 normally engages the inclined surfaces (Z formed on the blocks D and D.

A spring G, mounted upon the shank F formed on the lower end of the trip bar, engages the shoulder 7 formed on the trip bar and the bottom 6 of the housing, normally holding the roller in contact with the inclined surfaces d.- The trip bar F is at its upper .end attached to aclutch, not shown, of the type that is commonly used on punch presses.

The operation of my device is as follows:

fter the article to be worked upon has been fixed upon the bolster a the operator must press downward upon both the right and left handles to trip the machine; Unless both handles are jointly operated the press will nottrip. The reason for this is that, if only one handle is pushed downward the block attached to the trip rod secured to such handle will be pulled downward as such block moves downward, the trip arm and trip roller will be thrown toward the opposite block and will assume the position'shown, in Fig. 3,in dotted lines. This will have no effect upon the trip bar F. VVhen the handles are operated jointly the trip bar is moved downward because the trip collar is secured between the inclined surface 01* on the blocks D and D and consequently the downward movement iofthe blocks is transmitted toithe trip bar by means of the trip arm f. Theospring G will return the trip bar and the tripblocks to their normal position as soon as the handles are released. The springs 6 '6 and 6 return the handlesgL and R and the lever B respectively to their normal position, thereby relieving the spring .Grfrom the weight of the handles, and giving lateral support to the ends of such handles;

The handles, lever and the trip rods may be adjusted in relation to one another and in relation to the bar B, thereby making it possible to move the handles and trip rod so that they will not interfere with any ma terial that is to be worked upon. The adjustment of the trip rod in relation tothe handle L and lever R is made by loosening the screws Z and Z the screw Z controlling the longitudinal movement of the collar Z on the handle and lever, and the scre Z controlling the longitudinal movement of the trip rods through the eye Z formed in pin Z attached to the collar Z, The handle L is adjustablelongitudinally and in relation to the shaft B by loosening the screw 70 in the block l The block can be adjusted horizontally upon the shaft B bv 'moving the collars Z) and b Thehandle PL- and lever Rare adjustable longitudinally in relation to the bar B by loosening the screw The shank F maybe'attach'ed to a foot lever by means of the chain H, and.

mounted on the trip bar and comprising a trip arm, a trip roller,-and pivots connecting the trip arm to the bar and the roller to the arm, the arm and the roller being adapted to normally take a position in alignment with the point of. convergence of the inclined surfaces'and to bemoved from such alignment by the movement "of one of the reciprocating means, and to. be reciprocated in parallelism with the recipr0- eating means by the joint movement of the-:-

reciprocating means.

2. In a clutch tripping device the com: move the roller and arm in the line of re bination with a trip bar adapted to be re ciprocation of the trip bar, means to in- 10 ciprocated, of reciprocating means compris dividually reciprocate the blocks, and means a ing a housing, reclprocating blocks slidably to return thetrip bar to its normal posi- 5 supported by the housing, a trip arm, a tion.

trip roller, pivots connecting the roller to In Witness whereof, I have hereunto sub the trip arm and the trip arm to the trip scribed my name this 10th day of May 1920. 15 bar, the blocks being adapted to jointly INNES T. VERDIN. 

